Ontario municipal heritage registers: what leaves on January 1, 2027

Under the Ontario Heritage Act as amended by Bill 23 (2022) and Bill 200 (2024), a property listed on a municipal heritage register but not designated comes off the register on January 1, 2027 unless council designates it or issues a notice of intention to designate (NOID) in time. A property removed this way cannot be listed again for five years.

That affects tens of thousands of listed properties across Ontario, but the records are scattered across 100+ municipal registers, council agendas and PDF reports. There is no single province-wide list of what is leaving and what was saved.

What the region lists will hold

• Every listed property expected to drop off the register on Jan 1, 2027
• Every property saved by a late NOID or designation by-law, with the council date
• Address, municipality, outcome and the source document for each row
• No owner names
• Kept current through the January 2027 deadline

Municipal pages

• Toronto heritage register 2027
• Ottawa heritage register 2027
• Hamilton heritage register 2027
• London heritage register 2027
• Wellington County heritage registers 2027